On 11/16/05, Patrick Lynchehaun <[EMAIL PROTECTED]> wrote: > > In Iptables you can keep port 22 closed until needed, opening it first by > telneting to a higher port say 5500 and Iptables just giving access to this > ip. If you want to close it again you can telnet back in on another assigned > port say 5501, thus closing ssh port to that ip. >
Yup. AKA "port knocking" which I think someone did mention upthread
